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One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
FEATURES
Flexible inertial sensor evaluation platform
- Single main board operates with interchangeable
satellite boards
Separates DUT from controller for accurate environmental
testing
500Hz data rate SPI interface
Continuous stream to file data recording
Standard USB cable for power and communications
PC-based graphical user interface (GUI)
Fast, easy installation
GENERAL DESCRIPTION
The ADXRS450 inertial sensor evaluation system
is an easy-to-use evaluation tool targeting bench or desktop
characterization of Analog Devices, Inc., inertial sensor products.
The system consists of the inertial sensor evaluation board (ISEB),
or main board, and a satellite board for any Analog Devices
inertial sensor product. The ISEB connects directly to a PC via
USB cable, with the USB connection providing both power and
communications to the board. The ISEB is connected to the
satellite board through a ribbon cable. This cable allows the
satellite to be easily manipulated for testing or for being separately
placed into an environmental chamber for temperature or
humidity testing. Separating the boards mitigates corruption
of data due to the temperature and humidity effects of other
components.
The ISEB is a universal main board and is intended to be used
with various satellites of Analog Devices inertial sensors, including
analog and digital accelerometers, as well as gyroscopes. The
different products are evaluated by means of separate GUIs that are
customized for performance and characterization measurements
relevant to the inertial sensor being evaluated.
The EVAL-ADXRS450Z-M system contains the ISEB and the
EVAL-ADXRS450Z-S satellite. Also included is a USB A to
Mini-B cable to connect the ISEB to a PC and an 18-inch,
20-pin ribbon cable to connect the ISEB to the satellite. A CD
Please see the last page for an important warning and disclaimers.
ADXRS450 Sensor Evaluation System
Rev. 0 | Page 1 of 17
Evaluation Board User Guide
Figure 1. Inertial Sensor Evaluation System
is included with the necessary drivers and installers to use the
system and to quickly begin evaluating the ADXRS450.
INSTALLATION OVERVIEW
The user must complete the following steps, in the order listed,
in order to be successfully up and running with the ADXRS450
evaluation system.
1.
Download all CD-ROM files to the PC Hard Drive
2.
Install the USB drivers for the Inertial Sensor
Evaluation System (ISEB)
3.
Connect the ISEB hardware to the PC
4.
Install the latest Firmware Revision into the ISEB
hardware (included on the CD-ROM)
5.
Install the ADXRS450 Evaluation System GUI
6.
Configure the ISEB hardware
7.
Launch the ADXRS450 Evaluation System GUI and
test devices.
This guide is designed to provide all the detail necessary to both
install and operate the ADXRS450 Evaluation system.
ADXRS450 - UG
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Summary of Contents for Analog Devices ADXRS450
-
Page 1: Features
The user must complete the following steps, in the order listed, or main board, and a satellite board for any Analog Devices in order to be successfully up and running with the ADXRS450 inertial sensor product. The ISEB connects directly to a PC via evaluation system. -
Page 2: Table Of Contents
ADXRS450 - UG Evaluation Board User Guide TABLE OF CONTENTS Features ....................1 View and Record Data ..............9 General Description ................. 1 Temperature Test ................ 10 Installation Overview ..............1 Noise and Root Allan Variance ..........11 Revision History ................2 Turn-on Bias Stability .............. -
Page 3: Inertial Sensor Evaluation System Setup
Before proceeding with the installation routine, it is important Select ADI Inertial Sensor Evaluation System from the to first download all files included on the ADXRS450 model list (see Figure 4) and click Next to complete the installation CD-ROM to a local folder on the host PC. Browse... -
Page 4: Hardware Configuration
COM PORT VERIFICATION Installing the latest Firmware revision, as well as operating the ADXRS450 Evaluation GUI will require that the user know the communications port which has been assigned to the ISEB main board. With the ISEB main board connected to the PC,... -
Page 5: Updating/Repairing The Iseb Firmware
EVAL- ADXRS450Z-M system (Version 2.0). In addition, as new firmware is made available, it can be downloaded from the Analog Devices website (www.analog.com). To flash the ISEB microcontroller, follow these steps. - Page 6 Software/ folder on the included CD. The user will be greeted with the following screen: Figure 12: Destination Directory Selection Figure 11: ADXRS450 evaluation software installation welcome screen From this point, the following steps should be completed in order to successfully install the evaluation software.
- Page 7 Connect the ISEB to the USB cable. If prompted to install the device, see the Software Connect the ADXRS450 satellite to the opposite end of the ribbon cable. Configuration section for details on how to install and select the correct driver.
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Page 8: Inertial Sensor Evaluation System Graphical User Interface
To launch the evaluation GUI, simply click on Start > GUI is running. This will result in the ISEB and the Software All Programs > ADXRS450 Evaluation Software > ADXRS450 GUI losing sync, and the evaluation system will no longer Eval. -
Page 9: View And Record Data
GUI by the operating system. For Adjusting the Supply Voltage more information on the significance of the plotted signals, The ADXRS450 has been designed to operate over the full refer to the ADXRS450 Datasheet. voltage range of 3.3V to 5V (±5%). The device has been... -
Page 10: Temperature Test
Note that any offset correction made to the ADXRS450 is stored in the device’s EEPROM indefinitely, temperature sensor output plotted alongside the device’s RateOut, Filtered Self Test and Quadrature. Each data point is or until over written with a subsequent correction value. -
Page 11: Noise And Root Allan Variance
Determining the RMS noise of the ADXRS450 can be done on long term averages of the null output of the ADXRS450. This is this same panel. The evaluation GUI calculates the RMS noise usually reported in units of “degrees per hour”, and indicates... -
Page 12: Turn-On Bias Stability
ADXRS450 - UG Evaluation Board User Guide TURN-ON BIAS STABILITY Figure 21: Turn-on Bias Stability Another key performance characteristics of gyroscopes is their prompted to enter a file name for the data upon completion of turn-on to turn-on bias stability. Understanding this can aid in... -
Page 13: Turn-On Bias Settling
The recommended SPI message transaction is typically accomplished within 20ms turn-on time for the ADXRS450 is 100ms (typ), and it is not after power is applied to the device. recommended that customer applications try to obtain accurate Additionally, if the device is being rotated at a constant rate rate data from the device within this period. -
Page 14: Sensitivity Check
ADXRS450 - UG Evaluation Board User Guide SENSITIVITY CHECK Figure 23: Sensitivity Check Panel The last panel provides the user with a method for checking the As the satellite board is approximately square, as approximate sensitivity of a given device. The datasheet each adjacent side is brought flush with the specification for sensitivity is 80±3% LSBs/deg/sec. -
Page 15: Alternate External High Voltage Supply
ADXRS450, and requires an external inductor and diode for In order to ensure between 0.1mA and 1mA, a proper operation. Refer to the ADXRS450 datasheet for a full 12kOhm resistor can be chosen. description of the boost converter operation. -
Page 16: Header Pinout
ADXRS450 - UG Evaluation Board User Guide HEADER PINOUT 3.3V SCL1 SDA1 MOSI MISO SCL1 SDA1 MOSI MISO AGND Figure 26. ISEB 20-Pin Header Pinout ESD CAUTION Rev. 0 | Page 16 of 17... - Page 17 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Analog Devices reserves the right to change devices or specifications at any time without notice.
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